7bb41f6825
See https://sraka.xyz/posts/hs-bindgen-introduction.html. For now, this is a shell-based workflow, rather than using Nix to build everything, i.e. `nix develop` works but `nix build` doesn't. And `cargo build` has to be called manually to create the C library, rather than `cabal` being clever enough to invoke it itself. We ran `cargo cabal init` from the `rust` directory (`nix shell github:yvan-sraka/cargo-cabal`), which generated `hsbindgen.toml` (which we use), and `Setup.lhs` (which just added `extra-lib-dirs`, and with the wrong paths, so we dspecify those statically instead in `garnet.cabal`). We also follow its advice to use `staticlib`. Also, after we ran the first `cargo build` (requiring a `mkdir rust/src` before it would run), we took the generated the Haskell file, and moved the main contents in to `Main.hs` manually.
69 lines
2.0 KiB
Nix
69 lines
2.0 KiB
Nix
{
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inputs = {
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haskellNix.url = "github:input-output-hk/haskell.nix";
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hls-2-13 = { url = "github:haskell/haskell-language-server/2.13.0.0"; flake = false; };
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nixpkgs.follows = "haskellNix/nixpkgs-2511";
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flake-utils.url = "github:numtide/flake-utils";
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crane.url = "github:ipetkov/crane";
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rust-overlay = {
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url = "github:oxalica/rust-overlay";
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inputs.nixpkgs.follows = "nixpkgs";
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};
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};
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outputs =
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{ self
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, nixpkgs
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, flake-utils
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, haskellNix
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, hls-2-13
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, crane
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, rust-overlay
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}:
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flake-utils.lib.eachSystem [ "x86_64-linux" ] (system:
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let
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overlays = [
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haskellNix.overlay
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(final: _prev: {
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hixProject =
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final.haskell-nix.hix.project {
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src = ./.;
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evalSystem = "x86_64-linux";
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name = "garnet";
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compiler-nix-name = "ghc9141";
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shell.tools.cabal = "latest";
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shell.withHoogle = false;
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shell.tools.haskell-language-server = {
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src = hls-2-13;
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sha256map = {
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"https://github.com/snowleopard/alga"."d4e43fb42db05413459fb2df493361d5a666588a" = "0s1mlnl64wj7pkg3iipv5bb4syy3bhxwqzqv93zqlvkyfn64015i";
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};
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};
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};
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})
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(import rust-overlay)
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];
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pkgs = import nixpkgs { inherit system overlays; inherit (haskellNix) config; };
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haskell = pkgs.hixProject.flake { };
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rust = (crane.mkLib pkgs).overrideToolchain (p: p.rust-bin.selectLatestNightlyWith (
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toolchain: toolchain.default.override {
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extensions = [ "rust-src" ];
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targets = [ "x86_64-unknown-linux-gnu" ];
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}
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));
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in
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{
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devShells.default = pkgs.mkShell {
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inputsFrom = [
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haskell.devShells.default
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(rust.devShell { })
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];
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packages = with pkgs; [
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bacon
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ghcid
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rust-analyzer
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];
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};
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}
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);
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}
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